PARAGON Rotor Rings 340 x 28mm, PCD 233.9, 10-Bolt Replaces AP Racing CP3864-100/1

Not sure this is your ring? Measure yours and compare every size in our Rotor Ring Finder.

PARAGON Rotor Rings – 340 x 28mm, PCD 233.9, 10-Bolt – Replaces AP Racing CP3864-100/1

Paragon Performance replacement rotor rings for 2-piece floating brake rotors measuring 340 x 28mm on a 233.9mm PCD, with 10 rectangular mountings (9.5 x 15mm). They replace AP Racing CP3864-100/1. Each ring is cast from CM-250 high-carbon alloy iron with 48 directional vanes that pull air through the disc, so it runs up to 30% cooler than an OE rotor.

The rings are heat treated to relieve stress, then CBN machined for quick pad bedding. Lateral run-out is held within 0.03mm and balance within 2 g, which keeps judder down. The slotted face keeps the pad surface clean and helps in the wet. Sold as a left and right pair.

Note: Hat hardware is sold separately. Paragon recommends new hardware when replacing rings; its rotor assembly instructions give the torque specs. Confirm PCD (233.9mm), mountings (10 rectangular holes, 9.5 x 15mm) and max pad depth (43.5mm) match your assembly before ordering. Installation by a professional is recommended.

Features

• 340 x 28mm ring, PCD 233.9mm, D42 profile
• Direct replacement for AP Racing CP3864-100/1
• 10 rectangular mountings (9.5 x 15mm)
• 48 directional vanes, up to 30% cooler than OE rotors
• CM-250 high-carbon alloy cast iron, heat treated and CBN machined
• Run-out within 0.03mm; balanced within 2 g
• Slotted face for consistent bite and wet-weather performance
• Floating 2-piece design reduces fade and judder

Kit Contents

• 1 x pair of rotor rings (left and right)
• Installation manual

Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.